Ransomware Group: KAWA4096

VICTIM NAME: tokiomarine-nichido[.]co[.]jp

NOTE: No files or stolen information are [exfiltrated/downloaded/taken/hosted/seen/reposted/disclosed] by RedPacket Security. Any legal issues relating to the content of the files should be directed at the attackers directly, not RedPacket Security. This blog is simply posting an editorial news post informing that a company has fallen victim to a ransomware attack. RedPacket Security is in no way affiliated or aligned with any ransomware threat actors or groups and will not host infringing content. The information on this page is fully automated and redacted whilst being scraped directly from the KAWA4096 Onion Dark Web Tor Blog page.

AI Generated Summary of the Ransomware Leak Page

The ransomware leak pertains to the Japanese financial services company, Tokiomarine Nichido, which experienced a cybersecurity incident on June 26, 2025. The attack was discovered several days later on July 1, 2025. The breach involved the theft of sensitive data, as indicated by known infostealer activities. Numerous malware strains were detected during the incident, including variants such as Raccoon, RedLine, Lumma, and others, suggesting a sophisticated cyberattack with multiple malicious tools involved. The compromised systems had a total of 671 users, highlighting the scale of the affected infrastructure.

The leak page does not display explicit screenshots or detailed evidence, but reports indicate that the attacker gained access to internal data related to the company’s operations. This incident may impact customer trust and operational integrity, given the critical nature of financial data involved. The company’s activity is within the financial sector in Japan, and the attack appears to target internal and possibly client data. No public download links or leaked files are directly shared, but the presence of infostealer activity confirms data exfiltration and potential exposure of confidential information. The situation remains under investigation to assess the full extent of data compromised and the ongoing risks involved.